// 获取地址中的code值
export const getUrlParams = name => {
	let reg = new RegExp('(^|&)' + name + '=([^&]*)(&|$)');
	let r = window.location.search.substr(1).match(reg);
	if (r !== null) {
		return unescape(r[2])
	} else {
		return null
	}
}